13485221 has 8 divisors (see below), whose sum is σ = 13737600. Its totient is φ = 13235040.

The previous prime is 13485211. The next prime is 13485253. The reversal of 13485221 is 12258431.

13485221 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13485221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13485211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16265 + ... + 17073.

It is an arithmetic number, because the mean of its divisors is an integer number (1717200).

Almost surely, 2^13485221 is an apocalyptic number.

It is an amenable number.

13485221 is a deficient number, since it is larger than the sum of its proper divisors (252379).

13485221 is an equidigital number, since it uses as much as digits as its factorization.

13485221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099.

The product of its digits is 1920, while the sum is 26.

The square root of 13485221 is about 3672.2228962850. Note that the first 3 decimals coincide. The cubic root of 13485221 is about 238.0232364386.

The spelling of 13485221 in words is "thirteen million, four hundred eighty-five thousand, two hundred twenty-one".